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    <title>作业25</title>
    <script>
        /*
        如果一个数恰好等于它的约数之和，则称该数为“完美数”
        试寻找1~10000之间的所有完美数。
        */

        for(var i=1; i<=10000; i++){
            var sum = 0;
            for(j=1; j<i; j++){
                if(i%j == 0){
                    sum += j;
                }
            }

            if(sum == i){
                console.log(i);
            }
        }

    </script>
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